104418821 has 16 divisors (see below), whose sum is σ = 117074160. Its totient is φ = 92467200.

The previous prime is 104418799. The next prime is 104418823. The reversal of 104418821 is 128814401.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 17724100 + 86694721 = 4210^2 + 9311^2 .

It is a cyclic number.

It is not a de Polignac number, because 104418821 - 2¹⁴ = 104402437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104418823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64421 + ... + 66021.

It is an arithmetic number, because the mean of its divisors is an integer number (7317135).

Almost surely, 2^104418821 is an apocalyptic number.

It is an amenable number.

104418821 is a deficient number, since it is larger than the sum of its proper divisors (12655339).

104418821 is a wasteful number, since it uses less digits than its factorization.

104418821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816.

The product of its (nonzero) digits is 2048, while the sum is 29.

The square root of 104418821 is about 10218.5527840296. The cubic root of 104418821 is about 470.8973666080.

The spelling of 104418821 in words is "one hundred four million, four hundred eighteen thousand, eight hundred twenty-one".